Generator or producer



Nov. 18, 1930.

E. SCHUMACZHER GENERATOR OR PRODUCER Filed Jan. 51, 1928 Patented Nov. 1s, 1930 UNITED! STATES ZPATENT 1 we nnusr SCHUMACHER, or nnANKronr-oiv-rnE-MAIN, GERMANY GENERATOR on rnonuonn J Application filed January 31, 1928, Serial No. g50,880, -and in. Germany February 8 19 27. i

This invention concerns improvements in or relating to generators or producers. It has already been proposed to incorporate water chambers or headers and water tubes in the generator firstly for cooling the walls of said generator and secondly for utilizing the V I heat thus available. The headers at the upper and lower ends of the shaft were constructed in the form ofannular. chambers 10 connected together by water tubes. It has also been proposed that the upper header should be constructed in a larger form to serve as a steam space. These-types of construction havephowever, the defect firstly that the manufacture of an annular water header or an annular steam chamber is difficult and expensive. Furthermore the water tubes employed are subjected by the intense heating to expansion strains which have a deleterious effect upon their water tightness. It is true that it has been suggested that the water tubes should be curved somewhat a short distance from the headers, but experience has shown that this curvature is not suf- 95 ficient to take up the eXpanSiO Now according to the present invention all these defects are avoided by replacing the annular Water headersor steam chambers by ordinary straight drums which are located outside the shaft of the generator both thereabove and below and are connected with the water tubes. Thus said water tubes are given both above and below an approximately right angle bend so that even the largest expansion can be taken up by said bends and is not transmitted to the points of connection to the drums. Consequently it is possible to keep said tubes perfectly watertight. The length of the drums is approximately equal to that of the diameter of the generator, and the drums are disposed above and below either parallel to one another or so that the upper drums are at right angles to the lower drums. It is also possible to employ vertical drums 43 in place of the horizontal drums above referred to. The upper and lower drumsvare connected, in order to provide for the circulation of the water, with appropriate return tubes arranged on the outside. Various embodiments of generators according to the invention are illustrated by way of example in the accompanying drawing in which: i i Fig. 1 is a sideelevation of one embodiinent,'fl' Fig. 2 is'a cross-section thereof.

Referring, to the drawing a large number of vertical water tubes 2 which are bent ap-' proximately at right angles at the top and .botom are arranged in the brick-work shaft 1 of the generator and form its inner wall; said tubes are bent at top and bottom into two different planes so that the lower bent up portions 8 communicate with the lower drums 4; while the other bent up portions 5 communicate with the upper drums 6, which are at right angles to said lower drums. Depending. upon the position of any particular water tube in the shaft the lower bent portion 8- will be longer or shorterthan the upper 5. The upper and lower drums are connec led together outside the shaft of the generator by Y-shaped large-bore return tubes 7. Itis clear thatth'ese Y shaped tubes will be capable-of taking up any thermal expan- S1011 necessary I i The water rises through the water tubes 2 into the upper drums 6 and passes thence through the return tubes 7 into the lower drums 4; the upperdrums6 may serve at the same time to receive the steam formed. Due to the provision of the two bends, 3 and 5 in each tube expansion strain in the tubes is not transmitted to the pointsof connectionto the drums. Inaddition there is the advantage that the drums take the form of normal drums so that the whole arrangement is very simple and inexpensive. Said normal drums are furthermore readily accessible in the .well'known manner.

The arrangement according to the 'invention may also be employed for the combus- 7 tion chambers of coal-dust, gas or waste-gas tubes, said water tubes having substantially right angled bends, the upper header drums being at right angles to the lower header drums and the bent portions of the tubes lyin in two planes at right angles to one not er. 7

2. The combination with the shaft of a gas-generator; of a lining for the shaft composed of juxta osed water tubes having right angle ben s, upper and lower headers at right angles to one another arranged ex ternally of the shaft, the bends of each tube connecting it to the headers being substantially at right angles tothe tube andto each other, and circulating tubes connecting the headers.

3. The combination with the shaft of a gas generator; of a lining for the shaft composed of juxtaposed water tubes having their upper and lower portions bent at right angles to the tubes and to each other, external upper headers and external lower headers at right angles thereto and Y-shaped circulating tubes connecting the ends of a pair of upper headers with the middle of a lower header,

4. The combination with a gas producer audits shaft; of water tubes inside the shaft, straight headers at the outside of the shaft atthe ends thereof, the headers at one end being arranged at right angles to those at the other end, the tubes being connected at their opposite ends to the headers by right-angled bends, and circulating tubes outside of the headers connecting the upper and lower headers.

5. The combination with the shaft of a gas producer; of water tubes closely arranged within the shaft to form a lining, upper headers outside the shaft at opposite sides thereof'and parallel to one another, and simis ilar headers at the bottom of the shaft at substantially right angles to the upper headers, said tubes being connected to the headers by substantially right-angled bends, and Y-shaped circulating pipes connecting upper 1 and lower headers.

In testimony'that I claim the foregoing as my invention, I have signed my name this 17th day of January, 1928.

. ERNST SCHUMACHER. 

